Searchlight



0 April 2a, 1925- G. E. YOUNG smncnbmnr Filed Jan. 19, 1 23 IPA/antic!"'Ge'pr-ge EYQQYIQ His Attorney.

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UNITED STATESPATENT OFFICE.

GEORGE E. YOUNG, '35. SCI-IENECTADY, YGRK, ASSIGNOR TO GENERAL ELECTRICCOMPANY, A CORPORATION OF NEW YORK."

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Application filed January 19, 1923. Serial lilo. 613,588.

1" 0 aZZ whom it may concern.

Be itknown that I, GnonenE. YOUNG, a citizen of the United States,residing at Schenectady, in the county of Schenectady, State of New-York, have invented certain new and useful Improvements in Searchlights, of which the following is a specification. i V

My invention relates to searchlights and also to incandescent lampmountings and has among its objects the following:

To providemeans whereby incandescent lamps of high wattage may beusedin. connection with tilting projectors and to insure a constant positionof the incandescent lamp while the tilting takes place.

To provide means for mounting the incandescent lamp in an uprightposition whereby a projector associated therewith may be moved from oneposition to another without disturbing the lamp; and

To form a pendulum-like structure of the light source and its support.

To accomplish the foregoing, means are 2 provided such as hereinafterset forth and claimed, reference being had to the accompanying drawing.1

in the drawing which accompanies this specification Fig. 1 is a sideView, partly in sectlon of the searchlight, the section being taken online 1-.1,of Fig. 2 and Fig.2 is a front View in section of the'searchlight and of the incandescent lamp mounting, the section beingtaken on line 22, of Fig. 1.

Referring more in detailto the drawing, the incandescent lamp 2 is shownassociated with a searchlight of the usual typewhich is provided withthe usual reflector 3, drum 1), and window 5. As more clearly shown inFig. 2, the incandescent lamp is shown mounted on a pivotal support A.This support cmnprises a pair of arms a and 5 which are mounted insuitable bearings 6 and 7, respectively. The arm a as shown terminatesin an annular ring 8 while the arm 5 tel-m1- nates in the annular ring'9. The bearings (3 and 7 are provided with pins which project towardthe lamp and which extend through the rings 8 and 9. These pins and thehearings are hollow and through these hollow portions conductors 10 and11 extend which terminate in posts 12 and 13. These posts are attachedto the plate 1%. The

terminals of the lamp, as will be seen, also b the parts of the supportA contribute toward producing a weight for maintaining the lamp 2 in itsupright position as shown in Fig. 2. if desired the plate 1 1; may bemade of heavier or thicker material, the object being to stabilize thelamp 2 in its upright position inasmuch as lamps of this character lastlonger if held in an upright position.

With a device constructed as above explained it is possible to use as asource of light in a searchlight ahigh power incandescent la-nipinasmuch as the lamp may be maintained in an upright position while theprojector may be moved so as to swing the beam withoutdisturbing theposition of the lamp. j

Heretofore in certain types of lamps the reflector 3 has in someinstances been pivoted but this is the first construction that enablesthe drum and reflector to be tilted so as to throw the beam up or downwhile the lamp remains stationary without throwing the lampout of focus.

While I have shown my invention in a particular embodiment as required,I do not wish to be limited to anyparticular construction inasmuch aswith the disclosure herein made variations in structure will readilysuggest themselves to those skilled in the art. Such modificatlons willof course fall within the scope of my invention as covered by the claimscontained herein.

hat 1 claim as new and desire to secure by Letters Patent of ti e UnitedStates, 1s

1. A light projector comprising in com-- so that the source of light ismaintained substantially at the focal point of the re llector in everyposition of the frame when the frame is swung about its axis.

.9. A light projector comprising in comhi ation reflector, a casingabout the reflector a frame supported to freely swing within saidcasing, and a source of light secured to said frame to move therewith,said light and frame being mounted so that the light source ismaintained in a constant position when the axis of the casing is tilted.X11 witness whereof, I have hereunto set my hand this 17th day ofJanuary, 1923.

GEORGE E. YOUNG.

